ImageMagick
- ImageMagickTM 5.5.7 is a robust collection of tools and libraries offered under a usage license to read, write, and manipulate an image in many image formats (over 89 major formats) including popular formats like TIFF, JPEG, PNG, PDF, PhotoCD, and GIF. With ImageMagick you can create images dynamically, making it suitable for Web applications. You can also resize, rotate, sharpen, color reduce, or add special effects to an image or image sequence and save your completed work in the same or differing image format. Image processing operations are available from the command line, or from the C, C++, Perl, Java, PHP, Python, or Ruby programming languages. A high-quality 2D renderer is included, which provides a subset of SVG capabilities. ImageMagick's focus is on performance, minimizing bugs, and providing stable APIs and ABIs.
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WiringX
- WiringX is an upgrade to the old Wiring Diagram 2000,
it is more flexible then WD2000 and it has a better look as well.
And it is still FREEWARE!
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WiringX
- With this software you can create simple wiring layouts with the most common discreet electronic components and print them, which looks better then to draw them by hand. The software is designed for Win95/Win98/winME
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LochMaster
- LochMaster is a developers tool for strip board (VERO) projects for designing, documenting and testing a board. This is a commercial program. A free demo version is available.
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WHIP!
- WHIP! is Autodesk's free solution to open, view and print DWF files interactively - Autodesk's array of technical drawing applications including the venerable AutoCAD can output files to the compact DWF (Drawing Web Format) format - intended basically as a format for web delivery. WHIP! installs itself as an ActiveX control within Internet Explorer as a viewer technology - allowing you to zoom and pan any drawing saved in the DWF format.
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Gerber Viewer
- Gerber Viewer is a viewer for Gerber files, also called RS274X. The Gerber Viewer has a batch feature, which is based on Guile Scheme; you can write small Scheme scripts to generate other file formats, do design rule check, etc.
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GC-PREVUE
- DOS CAD/CAM software designed to help you work with RS-274 (often called "Gerber") photoplotter and NC drill CAD output data, also supports HPGL and Quest (Marconi Emma) plotter formats
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atlc - Arbitrary Transmission Line Calculator (for electrical transmission lines)
- atlc is a computer aided design (CAD) package for the design and analysis of electrical transmission lines and directional couplers of totally arbitrary cross section. 'atlc' can handle any cross section and any number of different dielectrics. It's also possible to analyse 3 conductor lines (directional couplers). The software is free, open-source and for Unix or GNU/Linux machines. It is not really interended for Windoze machines.
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Bode Diagrams
- Windows application for Bode's diagrams drawing and analysis. It allows to trace and to print the Bode diagrams, both asymptotic and true, and the analysis (zeros, poles, stabilization to open and closed ring, reaction, regulation, project and verification of control systems). The departure function can be expressed in whichever format, also mixed.
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DSP Design Performance
- site which contains a set of Java applets which may be freely used to design digital filters of many types, including high-Q notch filters, fractional-sample time delay filters and comb filters, in addition to the more traditional low-pass, high-pass, band-pass and band-stop filters, differentiators and Hilbert transformers
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eCircuit Center
- A free source of SPICE circuit files and tutorials for the hands-on learning of electronic circuits. Circuits you can design, test and modify using the SPICE simulator: Opamps, filters, sensors, PID controllers, etc.
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LTspice/SwitcherCAD III
- LTC SwitcherCAD. III is a fully functional Spice III simulator with enhancements and models for easing the simulation of switching regulators. This Spice is a high performance circuit simulator, integrated waveform viewer, which also includes schematic capture. Small, easy to learn, GUI version of Spice. Works perfectly on Wine emulator under Linux as well!
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MiscEl
- program to handle many different simple electronic calculations. This includes: ohms law, dB, charge curves, Wires, Fan cooling, PCB, color codes, thermo sensors, leds circuit, Fo, Serial/Paralle of R/C/L, and some more. The program is free to download and use, but the program is timelocked. A new version will have to be downloaded after about 1/2 year.
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Mathtools.net
- Mathtools.net is the technical computing portal for all scientific and engineering needs. The portal is provided as a free service to the scientific community and contains useful links for technical computing programmers.
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